testsax.java

javaEE 原代码 javaEE 原代码

package com.xml;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.Locator;
import org.xml.sax.InputSource;
import org.xml.sax.helpers.DefaultHandler;

import com.PropertyUtil;
import com.SysException;
import com.User;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

class TestSAX extends DefaultHandler {
	private StringBuffer buf;
	
	private PropertyUtil pc;

	private Object obj;
	
	private List result;
	

	private final String root = "xmlbody";
	

	public TestSAX() {
		super();
	}

	public TestSAX(Object obj) {
		super();
		// TODO Auto-generated constructor stub
		this.obj = obj;
		pc = new PropertyUtil();
	}

	public void setDocumentLocator(Locator locator) {
	}

	public void startDocument() throws SAXException {
		buf = new StringBuffer();
		result = new ArrayList();
		// System.out.println("*******开始解析文档*******");
	}

	public void endDocument() throws SAXException {
		// System.out.println("*******文档解析结束*******");
		//System.out.println("size:"+this.result.size());
	}

	public void startPrefixMapping(String prefix, String uri) {
		System.out.println(" 前缀映射: " + prefix + " 开始!" + " 它的URI是:" + uri);
	}

	public void endPrefixMapping(String prefix) {
		System.out.println(" 前缀映射: " + prefix + " 结束!");
	}

	public void processingInstruction(String target, String instruction)
			throws SAXException {
	}

	public void ignorableWhitespace(char[] chars, int start, int length)
			throws SAXException {
	}

	public void skippedEntity(String name) throws SAXException {
	}

	public void startElement(String namespaceURI, String localName,
			String qName, Attributes atts) {
		System.out.println("namespaceURI = " + namespaceURI +"; localName = " + localName + "; qName = " + qName);
		buf.delete(0, buf.length());
		
		 //for (int i = 0; i < atts.getLength(); i++) { System.out.println("元素名" +
		 //atts.getQName(i) + "属性值" + atts.getValue(i)); }
		 
	}

	public void endElement(String namespaceURI, String localName, String qName)
			throws SAXException {
		try {
			String className = "";
			if (this.obj != null) {
				className = pc.getClassName(obj.getClass());
			}
			if (!qName.equals(this.root)) {
				if (qName.equals(className)) {
					System.out.println();
					this.result.add(obj);
					//pc.toString(obj);
				} else {
					pc.setValue(obj,qName,buf.toString());
				}
			}
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}
		
	}

	public void characters(char[] chars, int start, int length)
			throws SAXException {
		// 将元素内容累加到StringBuffer中
		buf.append(chars, start, length);
	}
	
	public List copy(HttpServletRequest request)
			throws SysException {
		try {
			SAXParserFactory sf = SAXParserFactory.newInstance();
			SAXParser sp = sf.newSAXParser();
			//TestSAX testsax = new TestSAX(new User(),null);
			sp.parse(new InputSource("D:\\user.xml"), this);
			//sp.parse(request.getInputStream(),this);
			return this.getResult();
		} catch (IOException e) {
			e.printStackTrace();
		} catch (SAXException e) {
			e.printStackTrace();
		} catch (Exception e) {
			e.printStackTrace();
		}
		return new ArrayList();
	}

	public static void main(String args[]) {
		try {

			//SAXParserFactory sf = SAXParserFactory.newInstance();
			//SAXParser sp = sf.newSAXParser();
			TestSAX testsax = new TestSAX(new User());
			//sp.parse(new InputSource("D:\\user.xml"), testsax);
			testsax.copy(null);

		} catch (Exception e) {
			e.printStackTrace();
		}

	}

	public List getResult() {
		return result;
	}

	public void setResult(List result) {
		this.result = result;
	}
}